User manual

Page 51
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
ELR 9000 Series
3.5.4.2 Acknowledging device alarms
Device alarms (see 3.6.2) are always indicated in the front display and some of them are also reported as signal
on the analog interface socket (see table below).
In case of a device alarm occurring during remote control via analog interface, the DC input will be switched off
the same way as in manual control. While alarms OT and OV can be monitored via the corresponding pins of the
interface, other alarms like power fail (PF) can’t. Those could only be monitored and detected via the actual values
of voltage and current being all zero contrary to the set values.
All device alarms (OT, OV, PF, OCP and OPP) have to be acknowledged, either by the user of the device or by the
controlling unit. Also see „3.6.2. Device alarm and event handling“. Acknowledgement is done with pin REM-SB
switching the DC input off and on again, means a HIGH-LOW-HIGH edge (min. 50ms for LOW).
3.5.4.3 Analog interface specication
Pin Name Type* Description Default levels Electrical properties
1 VSEL AI Set voltage value
0…10 V or. 0...5 V corre-
spond to 0..100% of U
Nom
Accuracy < 0.2% *****
Input impedance R
i
>40 k...100 k
2 CSEL AI Set current value
0…10 V or. 0...5 V corre-
spond to 0..100% of I
Nom
3 VREF AO Reference voltage 10 V or 5 V
Tolerance < 0.2% at I
max
= +5 mA
Short-circuit-proof against AGND
4 DGND POT
Ground for all
digital signals
For control and status signals.
5 REMOTE DI
Switching internal /
remote control
Remote = LOW, U
Low
<1 V
Internal = HIGH, U
High
>4 V
Internal = Open
Voltage range = 0…30 V
I
Max
= -1 mA bei 5 V
U
LOW to HIGH typ.
= 3 V
Rec’d sender: Open collector against DGND
6 OT DO
Overheating or
power fail*** alarm
Alarm OT= HIGH, U
High
> 4 V
No Alarm OT= LOW, U
Low
<1 V
Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. ow +1 mA
I
Max
= -10 mA at U
CE
= 0,3 V
U
Max
= 30 V
Short-circuit-proof against DGND
7 - - - - -
8 PSEL AI Set power value
0…10 V or. 0...5 V corre-
spond to 0..100% von P
Nom
Accuracy < 0.2% *****
Input impedance R
i
>40 k...100 k
9 VMON AO Actual voltage
0…10 V or. 0...5 V corre-
spond to 0..100% von U
Nom
Accuracy < 0.2% at I
Max
= +2 mA
Short-circuit-proof against AGND
10 CMON AO Actual current
0…10 V or. 0...5 V corre-
spond to 0..100% von I
Nom
11 AGND POT
Ground for all
analog signals
For -SEL, -MON, VREF Signals
12 - - - - -
13 REM-SB DI
DC input OFF
(DC input ON)
(ACK alarms ****)
Off = LOW, U
Low
<1 V
On= HIGH, U
High
>4 V
On = Open
Voltage range = 0…30 V
I
Max
= +1 mA at 5 V
Rec’d sender: Open collector against DGND
14 OVP DO Overvoltage alarm
Alarm OV = HIGH, U
High
> 4 V
No alarm OV = LOW, U
Low
<1 V
Quasi open collector with pull-up against Vcc **
With 5 V on the pin max. ow +1 mA
I
Max
= -10 mA at U
CE
= 0,3 V, U
Max
= 30 V
Short-circuit-proof against DGND
15 CV DO
Constant voltage
regulation active
CV = LOW, U
Low
<1 V
CC/CP/CR = HIGH, U
High
>4 V
* AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, POT = Potential ** Internal Vcc approx. 10 V
*** Mains blackout, mains over- or undervoltage or PFC error **** Only during remote control ***** The error of a set value input adds to the general error
of the related value on the DC output of the device
3.5.4.4 Overview of the Sub-D Socket